* {
    box-sizing: border-box;
    padding: 0px;
    margin: 0px;
    list-style: none;
}


html,
body,
#app {
    height: 100%;

}



footer {
    height: 44px;
}

.container {
    height: calc(100% - 44px);
    background-color: gold;
    display: flex;
    flex-direction: column;
    &>header {
        height: 44px;
       

    }

    &>main {
        background-color: tomato;
        flex: 1;
        overflow-y: auto;
    }
}